Patent · US Active

Spiral wound membrane with bi-directional permeate flow

US9943807B2 · kind B2 · utility

0Cited by
12References
12Claims
0Family size

Inventors

Key dates

Filing dateSep 19, 2011
Grant dateApr 17, 2018
Priority date—
Expiry dateMar 31, 2034

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB01D2313/23
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

Disclosed is a spiral wound membrane element that provides two permeate streams through a permeate carrier sheet. The spiral wound membrane element is sealed such that the only communication with the permeate carrier is through a membrane sleeve. The first permeate stream flows spirally inward and the second permeate stream flows in the opposite direction, spirally outward. The permeate carrier sheet is sealed at two edges so that the permeate streams can only discharge from opposite, unsealed edges of the permeate carrier sheet. The first permeate stream may be collected in a central collection tube and the second permeate stream may be collected in a peripheral region of the membrane element.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.